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SHAREHOLDERS' EQUITY (Schedule of Intrinsic and Fair Values of Options Exercised) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Stockholders' Equity Note [Abstract] |  |  |
The intrinsic value of options exercised | $ 504 | $ 4,429 | $ 1,824
The original fair value of options exercised | $ 188 | $ 1,018 | $ 665

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- Definition The fair value of options exercised during the period. + References No definition available. + Details
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Namespace Prefix: | tsem_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Period Type: | duration